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https://issues.apache.org/jira/browse/HBASE-5962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270747#comment-13270747
]
stack commented on HBASE-5962:
------------------------------
Is this a 0.89fb issue only Kannan?
You might be interested in this that went into trunk recently:
{code}
commit 85a39b49eb24f99479d06dc3204bd7d21f4b63da
Author: Lars Hofhansl <[email protected]>
Date: Fri Feb 24 22:29:40 2012 +0000
HBASE-5455 Add test to avoid unintentional reordering of items in
HbaseObjectWritable (Michael Drzal)
git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1293455
13f79535-47bb-0310-9956-ffa450edef68
{code}
> interop issue: RowMutations should be added at the end in
> HbaseObjectWriteable class
> ------------------------------------------------------------------------------------
>
> Key: HBASE-5962
> URL: https://issues.apache.org/jira/browse/HBASE-5962
> Project: HBase
> Issue Type: Bug
> Reporter: Kannan Muthukkaruppan
>
> In HbaseObjectWriteable.java new classes should be added to the end; else,
> old clients will not be able to talk to new HBase servers. This is causing
> issues in test cluster with the following stack trace:
> 2012-05-08 11:24:32,416 ERROR org.apache.hadoop.hbase.io.HbaseObjectWritable:
> Can't find class
> java.lang.ClassNotFoundException:
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:247)
> at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:792)
> at
> org.apache.hadoop.hbase.io.HbaseObjectWritable.getClassByName(HbaseObjectWritable.java:552)
> at
> org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:520)
> at
> org.apache.hadoop.hbase.ipc.HBaseRPC$Invocation.readFields(HBaseRPC.java:136)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.processData(HBaseServer.java:953)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:895)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:471)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.run(HBaseServer.java:371)
> 2012-05-08 11:24:33,766 ERROR org.apache.hadoop.hbase.io.HbaseObjectWritable:
> Can't find class
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